diff --git a/Dockerfile b/Dockerfile
index 34b4b86..0d69440 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.11.5-slim-bullseye@sha256:de917502e531b3f6e4a5acef017e9feef392cf3eb76826fd46d6810c70ae9b5e
+FROM python:3.12.0-slim-bullseye@sha256:9e12e76357873637053b65ff61b03cec03d1a79db1ae1ff584b46a06483d0c44
 WORKDIR /
 ENV TZ=Asia/Tokyo